Ruler set



FIG. 1 is a front perspective view of the improved ruler set of the present invention;

FIG. 2 is a front elevational view thereof;

FIG. 3 is side elevational view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is rear elevational view thereof. 

The ornamental design for an improved ruler set, as shown and described. 